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Active location

Whitby, North Yorkshire

54.49°N, 0.62°W · ~26m · 06:33 – 19:21
Updated 03:50
Temp
15°C
↑ 0.9 / 1hr
Wind
6.9
↓ 0.4 / 1hr
Condition
Mostly cloudy
Mostly cloudy
Score
7.2
Good
Time
Condition
Precip mm
Precip %
Temp
Temp °C
Feels °C
Wind
Direction
Wind mph
Gust mph
Detail
Humidity %
Pressure
Vis km
UV Index
CAPE J/kg
Score
Mon 14 Sep Tue 15 Sep Wed 16 Sep Thu 17 Sep Fri 18 Sep Sat 19 Sep Sun 20 Sep Mon 21 Sep
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Mostly cloudy Overcast Overcast Mostly cloudy Mostly cloudy Mostly sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny Sunny intervals Mostly sunny Sunny intervals Overcast Mostly sunny Mostly sunny Partly cloudy near sunset Mostly clear Mostly clear Mostly cloudy Overcast Overcast Overcast Overcast Overcast Overcast Light drizzle Light drizzle Light drizzle Light drizzle Mostly sunny Sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny Sunny intervals Mostly sunny Light drizzle Light drizzle Mostly cloudy Mostly clear Clear Mostly clear Mostly clear Mostly clear Mostly clear Clear Clear Clear Mostly clear around sunrise Sunny intervals Mostly sunny Mostly sunny Mostly sunny Mostly sunny Sunny intervals Sunny intervals Mostly sunny Mostly sunny Sunny intervals Mostly cloudy Overcast Overcast Overcast Overcast Overcast Overcast Overcast Light drizzle Light drizzle Light drizzle Mostly cloudy Overcast Overcast Sunny intervals Mostly sunny Sunny Mostly sunny Mostly sunny Sunny intervals Sunny intervals Mostly cloudy Sunny intervals Sunny intervals Mostly sunny Clear near sunset Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear around sunrise Mostly sunny Mostly cloudy Overcast Overcast Overcast Overcast Mostly cloudy Mostly cloudy Mostly cloudy Mostly cloudy Overcast Overcast Overcast Overcast Mostly cloudy Mostly cloudy Overcast Overcast Overcast Overcast Overcast Mostly cloudy Mostly clear Mostly clear around sunrise Mostly sunny Mostly cloudy Overcast Light drizzle Light drizzle Light drizzle Moderate drizzle Moderate drizzle Moderate drizzle Moderate drizzle Moderate drizzle Moderate drizzle Mostly clear Clear Clear Clear Clear Clear Clear Mostly clear Partly cloudy Mostly cloudy Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy near sunset Partly cloudy Partly cloudy Partly cloudy Partly cloudy Partly cloudy
- - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 0.2 0.3 0.1 - - - - - - - - - - 0.2 0.2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 0.2 0.2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 0.2 0.2 0.5 0.5 0.5 0.5 0.5 0.5 - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
25% 30% 30% 25% 30% 15% 10% 0% 0% 5% 10% 5% 10% 15% 10% 10% 15% 15% 0% 10% 10% 10% 10% 10% 15% 35% 80% 85% 95% 70% 0% 0% 0% 0% 0% 0% 0% 0% 5% 25% 70% 70% 30% 0% 0% 0% 0% 10% 10% 0% 0% 0% 0% 10% 0% 0% 0% 5% 5% 5% 0% 0% 0% 0% 5% 5% 5% 5% 10% 10% 25% 65% 65% 65% 25% 15% 15% 10% 0% 0% 0% 0% 0% 0% 0% 5% 5% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 10% 15% 15% 5% 0% 0% 0% 10% 15% 15% 15% 10% 15% 15% 15% 15% 20% 25% 30% 20% 10% 0% 5% 0% 15% 60% 65% 65% 65% 60% 60% 60% 60% 60% 10% 0% 0% 0% 0% 0% 0% 0% 10% 10% 15% 15% 15% 10% 10% 0% 0% 0% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
 
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SW SW SW SW SW SW SW SW SW SW SW SW WSW SW SSW SSW S S SSW SW SW SW SW SW SW SW SW SSW SW WSW W W W W W WSW WSW WSW WSW WSW WSW W W WSW W W W W W WNW WNW WNW WNW WNW NW NW NW NW NNW N N NNE NNW WNW WSW WSW WSW SW SW SW SW SW SSW SSW SSW SSW SW SW WSW W W WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW WSW W W W W W W W W W W WSW WSW WSW WSW SW SW SW SW SW SW SW SW WSW WSW WSW WSW WSW WSW WSW SW SW SW SW SW WSW WSW WSW WSW W W W W W W W W W W W W W W WNW WNW WNW WNW N N N N N N N N N N N
7 6 5 5 6 7 8 9 10 13 9 10 9 12 9 4 6 3 6 9 14 14 19 15 15 15 15 14 9 8 11 13 14 15 13 14 14 14 13 11 8 10 10 9 10 10 11 11 12 13 13 12 11 14 14 14 13 11 9 6 3 2 3 6 8 9 10 11 12 12 13 14 16 17 19 19 19 18 16 14 15 17 18 18 18 17 17 16 16 16 16 16 15 15 15 15 15 15 16 16 17 18 18 19 19 19 18 17 16 15 14 13 13 13 15 17 19 21 22 20 18 15 13 12 11 11 11 11 8 8 8 9 9 10 11 12 13 13 13 13 13 14 14 14 14 14 14 14 13 12 10 8 6 5 4 - - - - - - - - - - -
13 13 10 10 12 13 14 17 19 24 17 18 18 22 17 7 13 7 12 18 28 26 36 29 29 29 28 26 17 15 20 25 26 28 24 28 27 26 25 20 15 19 19 18 20 20 20 20 20 22 21 19 17 22 23 23 22 19 16 13 8 6 7 10 12 14 16 17 18 19 20 23 25 28 29 31 31 29 26 24 26 28 30 31 30 29 28 26 25 25 25 25 24 24 23 23 23 24 25 26 28 29 30 31 31 31 30 29 27 25 23 21 20 22 25 28 31 34 36 33 28 24 21 19 18 18 19 19 14 14 14 15 15 17 18 19 20 20 21 21 21 21 21 21 21 21 21 21 20 19 17 15 12 11 9 - - - - - - - - - - -
 
94 93 96 96 95 89 83 76 73 68 63 63 65 72 79 82 84 90 83 79 78 78 79 83 84 85 90 93 94 85 79 68 62 57 55 52 51 49 62 69 79 80 75 74 74 73 75 77 80 83 86 86 86 82 79 76 73 69 67 67 69 70 69 67 67 69 72 75 77 80 82 84 86 87 88 89 87 82 76 69 63 57 53 53 57 60 64 68 71 73 74 75 77 78 79 79 79 78 77 77 75 72 69 66 63 61 59 58 58 59 61 64 67 72 78 82 83 82 81 82 83 84 84 83 82 79 76 74 82 82 82 83 83 84 85 86 86 85 84 83 82 81 80 80 81 82 83 83 81 77 71 64 57 51 47 - - - - - - - - - - -
1017 1016 1016 1016 1016 1016 1016 1016 1016 1016 1015 1015 1015 1014 1014 1013 1013 1013 1012 1012 1011 1010 1010 1009 1008 1008 1007 1007 1007 1008 1008 1009 1009 1009 1009 1009 1009 1009 1009 1009 1010 1010 1011 1011 1011 1011 1011 1011 1011 1012 1012 1012 1012 1013 1013 1014 1014 1014 1014 1013 1013 1012 1012 1012 1011 1011 1010 1009 1009 1008 1007 1006 1004 1003 1002 1001 1001 1000 1000 1000 1000 1000 1000 1000 1000 999 999 999 999 999 1000 1000 1000 1000 1000 1000 1001 1001 1001 1001 1001 1002 1002 1002 1003 1003 1003 1004 1004 1004 1004 1004 1004 1004 1003 1003 1002 1002 1001 1002 1002 1003 1004 1004 1005 1005 1005 1006 1006 1006 1006 1006 1006 1006 1006 1006 1007 1008 1009 1010 1011 1012 1013 1014 1016 1016 1017 1018 1019 1020 1020 1021 1021 1022 1022 - - - - - - - - - - -
17.1 17.9 13.8 13.4 15.1 17.8 21.1 27 27.3 30 31.4 29 28.7 19.6 21.6 20.4 18.7 17.7 23 23.4 22.4 22 24 24.4 21.3 23.4 14.5 13 14.3 40.2 41.4 41.4 41.1 42.6 41.6 40.6 41.6 46 43 43.3 39.7 21.7 33.1 34 35 35 34.6 31.4 28.2 25.1 22 21.9 21.8 23.5 24.2 24.8 25.2 25.7 26.1 26 25.9 25.8 25.4 25 24.6 24.4 24.2 24 18.6 13.1 7.7 12.1 16.5 21 18 15 12 16.2 20.4 24.6 23.9 23.2 22.5 23.2 23.9 24.6 24.2 23.9 23.5 23.4 23.4 23.4 23.3 23.2 23 23.1 23.2 23.2 23 22.8 22.6 22.9 23.2 23.5 23.2 22.9 22.6 22.6 22.6 22.6 22.5 22.5 22.4 22.1 21.9 21.6 21.8 22.1 22.3 21.9 21.5 21.1 21.5 21.9 22.3 22.7 23.2 23.6 17.3 10.9 4.6 7.3 10 12.8 15.5 18.2 20.9 21.3 21.7 22.2 22.6 23 23.4 23.4 23.4 23.4 23.3 23.3 23.3 24 24.7 25.4 26 26.7 27.4 - - - - - - - - - - -
- - - - - 0.2 0.7 1.4 2.3 2.5 2.2 2.2 1.4 0.5 0.4 0.2 - - - - - - - - - - - - - 0.2 0.7 1.4 2.3 2.7 2.6 2.6 1.9 1.1 0.3 0.2 - - - - - - - - - - - - 0.2 1 2 2.9 3.5 3.6 3.5 3.5 3.3 2.7 1.7 0.8 0.1 - - - - - - - - - - - 0.1 0.9 2 3 3.6 3.7 3.4 3.1 2.7 2.2 1.7 1 0.1 - - - - - - - - - - - 0.2 1 1.6 1.8 2 2.3 2.5 2.6 2.6 2.1 1.4 0.6 - - - - - - - - - - - - 0.2 1 1.5 1.7 2.4 2.4 2.3 2.1 2 1.8 1.3 0.7 - - - - - - - - - - - - 0.1 0.6 1.1 1.6 2 2.2 2.3 3.4 3 2.4 1.6 0.8 - - - - - -
0 0 0 0 0 0 0 20 30 50 60 40 30 30 30 20 10 0 0 0 0 0 0 0 0 0 0 30 60 10 20 10 30 60 70 70 80 40 80 170 210 50 20 0 0 0 0 0 0 0 0 0 0 0 10 20 30 40 50 50 50 50 60 60 60 40 20 0 0 0 0 0 0 0 0 0 0 40 90 120 120 100 90 80 80 70 50 20 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10 20 30 40 40 40 30 20 10 10 0 0 0 0 0 0 0 0 0 0 0 0 0 10 20 20 0 0 0 0 10 20 20 30 30 30 30 20 20 10 10 10 0 0 0 0 0 0 10 10 10 20 20 - - - - - - - - - - -
7.5 6.5 7.1 8.2 7.8 7.5 7.3 6.7 6.5 5.3 6.7 6.5 6.6 4.4 6.7 8.7 7.7 10.0 7.8 6.6 3.3 3.6 1.3 2.9 3.0 2.9 3.1 3.5 5.3 7.1 6.1 5.0 4.8 4.4 5.3 4.5 4.8 4.8 5.0 6.1 7.1 6.2 6.3 6.6 6.2 6.2 6.1 6.0 5.9 5.3 5.5 6.0 6.3 5.4 5.1 5.1 5.5 6.1 6.8 7.7 8.7 10.0 10.0 8.2 6.3 5.9 5.5 5.2 4.9 4.7 4.5 3.8 4.4 3.8 3.5 2.0 3.2 3.7 4.5 4.9 4.6 3.9 3.4 3.4 3.6 3.8 4.0 4.3 4.5 4.6 4.6 4.6 4.7 4.9 5.0 5.0 4.9 4.8 4.6 4.3 4.0 3.7 3.4 2.0 2.0 2.0 2.2 3.8 4.2 4.7 5.1 4.4 4.5 4.2 3.5 4.0 3.2 1.2 0.9 1.5 2.6 3.5 5.4 5.9 6.3 6.3 6.1 4.9 7.1 5.9 5.9 5.6 5.4 6.2 5.9 5.7 5.4 5.6 5.5 5.5 5.5 5.4 5.4 5.4 5.4 5.4 5.4 4.3 4.5 4.9 5.4 6.0 6.6 7.0 7.4 8.8 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0
Best Activity Window
WeatherDuck score WeatherDuck score Wind matters most. Rain comes next. Sky only nudges it. Temperature is off by default because layers and kit change comfort.
Day average
7.2/10
Windy day
Best window
18:00-21:00
avg 8.8/10
Day average: 7.2/10
Best window: 18:00-21:00 · Avg 8.8
06:00 · 8.2/10
07:00 · 7.8/10
08:00 · 7.5/10
09:00 · 7.3/10
10:00 · 6.7/10
11:00 · 6.5/10
12:00 · 5.3/10
13:00 · 6.7/10
14:00 · 6.5/10
15:00 · 6.6/10
16:00 · 4.4/10
17:00 · 6.7/10
18:00 · 8.7/10
19:00 · 7.7/10
20:00 · 10.0/10
21:00 · 7.8/10
06
07
08
09
10
11
12
13
14
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20
21
What this shows
The selected day from 06:00 to 21:00, scored from 0-10. The top line gives the day average and strongest window; the bars show how conditions rise and fall through that activity window. WeatherDuck score — Wind up to 5 mph (matters a lot) · Rain none at all (matters a fair bit) · Sky At least Mostly cloudy (matters a fair bit).
Score Customiser
WeatherDuck score
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These factors shape your score — set a comfy range for each, and how much it matters. Add more from the tray, or remove ones you don't care about. The bars update instantly.

Wind
Comfy range up to 5 mph
How much it matters
matters a lot
Rain
Comfy range none at all
How much it matters
matters a fair bit
Sky
Comfy range At least Mostly cloudy
How much it matters
matters a fair bit
Temperature
Comfy range 0 – 25°C
How much it matters
matters a fair bit
Time of day
Comfy range any time of day
How much it matters
matters a fair bit
UV
Comfy range any UV level
How much it matters
matters a fair bit
Wind direction
Comfy range any direction
How much it matters
matters a fair bit
Visibility
Comfy range at least 5 km
How much it matters
matters a fair bit
Not counted — tap to add
Day briefing

Overcast

22° / 15° · Today · Mon 14

Dry through the day with little or no measurable rain. Southwesterly winds averaging around 8 mph with peaks near 14 mph, gusting to 28 mph. Temperatures range from 15C to 22C, trending warmer later with largely cloudy skies.

0.0 mm
Rain total
14 mph SW
Wind max
gusts 28 mph
2.5
UV max
peak 12:00
Low
Pollen
Grass
31
Air quality
Fair
Very low
Thunder
CAPE 60
Atmosphere
Cloud avg 65%
Freezing level 3,740 mup to 4,210 m
Fog risk Low
Sun & Moon
06:33 / 19:21
Sun ↑↓
12 h 48 m
Daylight
10:53 / 19:52
Moon ↑↓
Waxing Crescent
Moon phase
6% lit
Live rain radar
LIVE
Loading radar…
--:--
Light Moderate Heavy
Radar data by RainViewer
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Ground conditions
Is it muddy out there?
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0 mm
Last 24 h
2.6 mm
Last 7 days
Measured at Sandsend rain gauge, 7.0 km away
Create a free account
Rain gauges and totals stay free for everyone
What to wear
Warm and settled, so choose light layers and still pack a waterproof.
LayerItemMaterialWhy
Base Lightweight wicking tee Synthetic or light merino; avoid cotton (sweat trap) 22°C, so active hiking will be warm
Mid Light fleece (in pack) Micro-fleece or thin softshell for summits/breaks Cooler at altitude, useful on stops
Outer Waterproof (in pack) Lightweight packable shell because UK weather changes fast Always carry because conditions shift quickly
Lower Walking trousers or shorts Quick-dry, stretch; not jeans (heavy when wet) Warm and dry, freedom of movement
Feet Trail shoes or light boots Good grip and breathable for dry ground Dry paths, lighter footwear OK
Extras Hat, gloves, gaiters Pack spare mid-layer, buff/neck gaiter Cool on ridges, so extra warmth will be useful
Start light. Keep 2 layers in your pack.
Wear from the start 3 pieces
Keep in your pack 2 layers
Add before you go Weather protection

Tap an item to see why

Essential Recommended Guidance

Guidance based on the forecast, not professional safety advice. Always use your own judgement. BMC layering guide →

Inversion Outlook Forecast source Met Office Seamless
UKV 2 km with UKMO Global fallback
Likelihood labels describe the model signal, not an exact percentage chance.
Morning 00:00–12:00 · Afternoon 12:00–00:00
Up to two qualifying hours before midnight join the next morning.
North York Moors region
Unlikely
Monday morning BEST
No clear window yet.
MON MORNING
No clear window
Unlikely
MON AFTERNOON
No clear window
Unlikely
TUE MORNING
No clear window
Unlikely
Tap a period for detail
Key Factors What we look for

Our inversion forecast combines five weather factors and how long favourable conditions are expected to last.

S1 · Inversion
Warm air sitting above cooler valley air — the essential ingredient for a cloud sea.
S2 · Moist Below
Whether the valley air is damp enough to form and hold cloud.
S3 · Moisture Contrast
A sharp boundary between the cloudy valley and the dry air above it.
S4 · Clear Above
Clear, dry air above the cloud layer — the better this is, the cleaner the summit views.
S5 · Wind Calm
Light winds at low levels to keep the inversion intact and the cloud sea flat.
Duration
How long the conditions hold — a sustained event gives more time to get above the clouds.
Temperature lid
15%
Valley moisture
100%
Layer contrast
23%
Summit clarity
10%
Wind speed
9%
Duration
0h
No temperature inversion detected
Valley air moist enough
No moisture contrast, diffuse profile
Saturated above, no clear cap
Too windy, mixing likely
No sustained favourable window
Create Free Account for 1 Alert
Loading…
Cloud Inversion Heatmap About this map A shaded area means several nearby locations agree — amber for possible, green for likely, blue for very likely. The bands always sit inside one another, so stronger signals appear more solid.
The purple dot marks your location.
Drag the timeline to see how the chance changes through the night.
Atmospheric Profile · Whitby · 26 m
Loading… Timeline
Atmospheric profile data for Whitby,GB
Surface Pressure

Humidity at Pressure Levels

Higher humidity means the air is closer to saturation.

Temperature at Pressure Levels

Warmer air above cooler air can indicate an inversion.

All heights shown equally.

Golden Hour
Today
DARKNESS
DAYLIGHT
05:48
06:13
06:33 Sunrise
06:53
07:18
Golden Hour · 40 min
Be at your summit by 06:13
Allow time to set up before the light show begins.
Monthly Inversion Chance
Illustrative relative chance by season
Illustrative — typical UK pattern
J
F
M
A
M
J
J
A
S
O
N
D
~2 proper inversion days per year. Mostly late autumn to spring.

Cloud inversions explained

What is a cloud inversion near Whitby, North Yorkshire?

A cloud inversion happens when cool, moist air becomes trapped in valleys beneath warmer air above. If the trapped moisture turns into fog or low cloud, the hills can rise through it into clearer air and sunshine. From a summit, the result can look like a wide sea of cloud with only the higher peaks visible.

The best chance near Whitby, North Yorkshire is a calm, settled night with moist valley air, a warm lid above and clearer, drier air over the tops. The bands on this page, from Unlikely to Very likely, describe the strength of that overall signal rather than a percentage promise, so always check timing, estimated cloud height and wind before setting off.

How to read this page. The headline outlook covers the surrounding region. Key Factors and the Atmospheric Profile describe the nearest available atmospheric profile.

Read the full UK cloud inversion guide See how WeatherDuck forecasts inversions
Tonight's Stargazing
17
Very poor conditions Skies look closed in — best to wait it out.
Waxing Crescent Moon Waxing Crescent 11%
Mostly cloudy Cloud Cover Mostly cloudy 83%
Moon Times Rise 10:53 · Set 19:52
Sky Clarity 21 km Clear
Lunar Day Day 3.1
Light Pollution View map ↓
Tonight's Aurora
Aurora & Solar Wind NOAA
4.7 Planetary Kp Very Low
Wind Speed 314 km/s
Bz -2.9 nT
Density 3.1 p/cm³
Bt 7.0 nT
No significant aurora activity expected tonight.

Nightly Outlook

Tonight · 14 Sep

Waxing Crescent · 11% illuminated

16/100
Best window 20:51–21:51 Lower cloud and a low or hidden moon.
Moon height above horizon DaylightGreen = best stargazing hours
18:00–10:00 next morning
Moonset 19:52 Sunset 19:21Sunrise 06:35
Every hour in detail
Hours after midnight are the following morning.
HourCloud coverMoon
18:00 62% Above horizon
19:00 57% Above horizon
20:00 32% Below horizon
21:00 26% Below horizon
22:00 80% Below horizon
23:00 100% Below horizon
00:00 100% Below horizon
01:00 100% Below horizon
02:00 100% Below horizon
03:00 99% Below horizon
04:00 98% Below horizon
05:00 98% Below horizon
06:00 97% Below horizon
07:00 94% Below horizon
08:00 66% Below horizon
09:00 31% Below horizon
Highest moon 11° at 18:00 Lunar day 3.1

Aurora Kp · 3-Day Forecast

NOAA SWPC · 3-hourly
Higher Kp = stronger geomagnetic activity = better aurora chances. For UK observers, Kp 4+ means aurora is possible from N. Scotland; Kp 5+ brings it across the whole UK.
Today
Mon 14 Sep
Unsettled
Peak Kp 3.7 at 03:00 UTC
Slightly unsettled — minor activity, no aurora expected.
9630
3.7 · 03:00
0003060912151821
Tomorrow
Tue 15 Sep
Unsettled
Peak Kp 3.7 at 03:00 UTC
Slightly unsettled — minor activity, no aurora expected.
9630
3.7 · 03:00
0003060912151821
Wed 16
Wed 16 Sep
Unsettled
Peak Kp 4.7 at 21:00 UTC
Faint aurora possible from N. Scotland.
9630
4.7 · 21:00
0003060912151821
Aurora Forecast Map
NOAA OVATION Aurora Forecast
Global — OVATION Model
UK Focus
Your Night Sky
Meteor Showers
Coming up this year
Orionids Oct 21
Oct 2 – Nov 7
Fast, with persistent trains.
Leonids Nov 17
Nov 6 – Nov 30
Occasional storms. Fast, bright.
Geminids Dec 14
Dec 4 – Dec 20
Best of the year. Bright, multi-coloured.
Earlier this year
Quadrantids Jan 4
Jan 1 – Jan 6
Strong, short-lived peak. Bright fireballs.
Lyrids Apr 22
Apr 16 – Apr 25
Sparse, sometimes glowing trails.
Eta Aquariids May 6
Apr 19 – May 28
Best before dawn. Fast meteors.
Delta Aquariids Jul 30
Jul 12 – Aug 23
Steady rates, faint. Best late night.
Perseids Aug 12
Jul 17 – Aug 24
Bright, reliable. Best summer shower.
Light Pollution Map
Understanding the stargazing score

The stargazing score combines cloud cover and moon illumination to estimate how good conditions are for observing the night sky. Cloud cover is the dominant factor — even the darkest location is useless under heavy cloud.

The Bortle scale measures light pollution from 1 (pristine dark sky) to 9 (inner-city sky). In the UK, the best accessible sites reach Bortle 2 to 3, found in areas like Northumberland International Dark Sky Park, parts of the Lake District, Snowdonia, the Brecon Beacons, and the Scottish Highlands. At Bortle 3, the Milky Way is clearly visible and dozens of deep-sky objects are observable with binoculars.

Moon phase matters: A new moon (0% illumination) provides the darkest sky. A full moon floods the sky with light, washing out everything except planets and the brightest stars. The best stargazing combines a new or thin crescent moon with clear skies.

Practical tips: Give your eyes 20 to 30 minutes to dark-adapt after arriving at your spot. Avoid looking at phone screens (use a red-light torch instead). The hours after midnight are often best, as the atmosphere settles and any remaining cloud may clear.

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